An electric strike is a door locking mechanism used in access control systems, allowing doors to be opened electronically. It replaces the fixed strike faceplate often used with a latchbar (also known as a keeper). When activated, the electric strike releases the latch, permitting the door to open without manually turning the door handle. Electric strikes are typically installed in the door frame and work in conjunction with various types of locks, such as cylindrical, mortise, or rim locks. They are often used in conjunction with card readers, keypads, or other electronic access control devices. The operation of an electric strike involves two main components: the strike plate and the keeper. The strike plate is mounted on the door frame, while the keeper is the movable part that holds the latch in place. When the electric strike is energized, the keeper pivots or retracts, allowing the door to open. Electric strikes can be configured in two modes: fail-secure and fail-safe. In fail-secure mode, the strike remains locked during a power failure, ensuring security. In fail-safe mode, the strike unlocks during a power failure, allowing free egress for safety. Electric strikes are versatile and can be used in various settings, including commercial buildings, residential complexes, and secure facilities. They offer the advantage of remote access control, allowing doors to be unlocked from a distance, enhancing security and convenience. Additionally, they can be integrated with other security systems, such as alarms and surveillance cameras, to provide a comprehensive security solution.

1. **Gather Tools and Materials**: Electric strike, power supply, screwdriver, drill, chisel, wire strippers, multimeter, and mounting hardware. 2. **Turn Off Power**: Ensure the power to the door's existing lock system is turned off to prevent electrical shock. 3. **Remove Existing Strike Plate**: Unscrew and remove the existing strike plate from the door frame. 4. **Prepare the Door Frame**: Use a chisel and drill to enlarge the cavity in the door frame to fit the electric strike. Ensure the cavity is deep enough for the strike to sit flush. 5. **Install the Electric Strike**: Position the electric strike in the cavity and secure it with screws. Ensure it aligns properly with the latch bolt. 6. **Wire the Electric Strike**: Connect the electric strike to the power supply. Strip the wires and connect them according to the manufacturer's instructions, typically connecting the positive and negative wires to the corresponding terminals. 7. **Test the Wiring**: Use a multimeter to ensure the connections are correct and there is no short circuit. 8. **Connect to Access Control System**: If applicable, connect the electric strike to an access control system, such as a keypad or card reader, following the system's wiring diagram. 9. **Test the Electric Strike**: Restore power and test the electric strike by activating the access control system. Ensure the strike releases the latch bolt when activated. 10. **Adjust as Necessary**: If the strike does not operate smoothly, adjust its position or check the wiring connections. 11. **Secure All Components**: Once functioning correctly, secure all components and ensure all wires are neatly tucked away. 12. **Final Test**: Conduct a final test to ensure the electric strike operates reliably and the door locks and unlocks as intended.

Electric strikes can be categorized based on their functionality, installation, and security features: 1. **Fail-Secure (Fail-Locked):** In a power failure, the door remains locked. This type is ideal for security-sensitive areas where maintaining security during power loss is crucial. 2. **Fail-Safe (Fail-Unlocked):** In a power failure, the door unlocks. This is suitable for emergency exits or areas where safe egress is a priority during power outages. 3. **Intermittent Duty:** Designed for short-term use, typically in low-traffic areas. They are not meant for continuous operation and can overheat if used excessively. 4. **Continuous Duty:** Built for high-traffic areas, these strikes can handle constant use without overheating, making them suitable for busy entrances. 5. **Surface-Mounted:** Installed on the surface of the door frame, these strikes are easier to install but may not be as aesthetically pleasing as other types. 6. **Mortise-Mounted:** Installed within the door frame, providing a cleaner look. They require more complex installation but offer better security and aesthetics. 7. **Pre-Load Capable:** Designed to operate even when there is pressure on the door, such as from weather stripping or misalignment, ensuring reliable operation. 8. **Dual Voltage:** Can operate on different voltage levels, providing flexibility in installation and compatibility with various power supplies. 9. **Smart Electric Strikes:** Integrated with access control systems, allowing for remote operation and monitoring. They can be part of a larger security system, offering features like audit trails and integration with smart home devices. 10. **Fire-Rated:** Certified for use on fire doors, ensuring compliance with safety regulations while maintaining security. Each type of electric strike is suited for specific applications, and the choice depends on factors like security needs, traffic levels, and installation requirements.

To wire an electric strike to an access control system, follow these steps: 1. **Power Supply**: Ensure the electric strike and access control system are compatible with the same voltage. Typically, electric strikes operate on 12V or 24V DC. 2. **Wiring the Electric Strike**: - Connect the positive wire from the power supply to the positive terminal of the electric strike. - Connect the negative wire from the power supply to the common terminal of the relay in the access control system. 3. **Access Control System**: - Connect the normally open (NO) terminal of the relay to the positive terminal of the electric strike. - Connect the negative terminal of the electric strike to the negative terminal of the power supply. 4. **Control Wiring**: - Connect the access control reader to the control panel using the appropriate data wires (e.g., Wiegand, RS-485). - Ensure the reader is powered by connecting it to the power supply or control panel. 5. **Testing**: - Power on the system and test the access control reader by presenting a valid credential. - Verify that the relay activates, allowing power to flow to the electric strike, which should unlock the door. 6. **Fail-Safe vs. Fail-Secure**: - Determine if the electric strike is fail-safe (unlocks when power is lost) or fail-secure (remains locked when power is lost) and configure the wiring accordingly. 7. **Final Checks**: - Ensure all connections are secure and insulated. - Test the system multiple times to confirm reliable operation. This setup allows the access control system to control the electric strike, enabling secure entry based on authorized credentials.

Electric strikes offer several advantages over traditional locks: 1. **Remote Access Control**: Electric strikes can be integrated with access control systems, allowing remote operation and monitoring. This is ideal for managing entry in large buildings or multiple locations. 2. **Increased Security**: They provide enhanced security features, such as automatic locking after entry, which reduces the risk of doors being left unlocked. 3. **Convenience**: Users can unlock doors without physical keys, using keycards, fobs, or mobile apps, which simplifies access management and reduces the risk of lost keys. 4. **Integration with Security Systems**: Electric strikes can be connected to alarm systems, surveillance cameras, and intercoms, providing a comprehensive security solution. 5. **Customizable Access Levels**: They allow for different access levels and schedules, enabling specific permissions for different users or times, enhancing security and flexibility. 6. **Audit Trails**: Many electric strike systems can log entry and exit times, providing valuable data for security audits and monitoring. 7. **Emergency Egress**: Electric strikes can be configured to allow free egress in emergencies, complying with safety regulations while maintaining security. 8. **Durability and Reliability**: Electric strikes are often more durable than traditional locks, with fewer mechanical parts that can wear out or fail. 9. **Aesthetic and Design Flexibility**: They can be installed in various door types and styles, offering more design flexibility without compromising security. 10. **Cost-Effective Over Time**: While the initial installation cost may be higher, the reduced need for rekeying and the ability to easily update access credentials can lead to long-term savings. Overall, electric strikes provide a modern, secure, and flexible solution for access control, making them a preferred choice for many commercial and residential applications.

1. **Check Power Supply**: Ensure the electric strike is receiving the correct voltage. Use a multimeter to verify the power supply matches the strike's specifications. 2. **Inspect Wiring**: Examine all connections for loose or damaged wires. Ensure polarity is correct and connections are secure. 3. **Test the Locking Mechanism**: Manually test the strike to ensure the mechanical parts are not jammed or obstructed. Lubricate if necessary. 4. **Verify Alignment**: Ensure the strike and latch are properly aligned. Misalignment can prevent the latch from engaging or releasing. 5. **Check Control Devices**: Test any connected access control systems, such as keypads or card readers, to ensure they are functioning correctly. 6. **Examine the Door and Frame**: Ensure the door closes properly and the frame is not warped, which can affect strike operation. 7. **Inspect for Physical Damage**: Look for signs of wear or damage on the strike itself, which may require replacement. 8. **Test the Release Mechanism**: Ensure the release mechanism (e.g., push button, remote control) is operational and correctly wired. 9. **Review Installation Instructions**: Confirm the strike is installed according to the manufacturer's guidelines, including any specific mounting requirements. 10. **Check for Software Issues**: If the strike is part of a networked system, ensure software settings are correct and up to date. 11. **Consult Manufacturer Support**: If issues persist, contact the manufacturer for technical support or consult the product manual for troubleshooting tips. 12. **Replace Components**: If a specific component is identified as faulty, replace it with a compatible part. 13. **Test After Repairs**: After making adjustments or repairs, test the system thoroughly to ensure the issue is resolved.

When using electric strikes, several security considerations must be addressed to ensure the safety and integrity of the access control system: 1. **Power Supply**: Ensure a reliable power source with backup options like batteries or uninterruptible power supplies (UPS) to maintain functionality during power outages. 2. **Fail-Safe vs. Fail-Secure**: Decide between fail-safe (unlocked when power is lost) and fail-secure (locked when power is lost) configurations based on the security needs and safety requirements of the facility. 3. **Tamper Resistance**: Use electric strikes with tamper-resistant features to prevent unauthorized access through physical manipulation or force. 4. **Compatibility**: Ensure the electric strike is compatible with the door and lock hardware to prevent vulnerabilities due to improper installation or mismatched components. 5. **Installation Quality**: Proper installation by qualified professionals is crucial to prevent security gaps. Poor installation can lead to misalignment or malfunction, compromising security. 6. **Access Control Integration**: Integrate electric strikes with a robust access control system to monitor and log entry and exit, providing an audit trail for security reviews. 7. **Environmental Conditions**: Consider environmental factors such as weather, temperature, and humidity, which can affect the performance and durability of electric strikes. 8. **Regular Maintenance**: Implement a regular maintenance schedule to check for wear and tear, ensuring the electric strike operates correctly and securely. 9. **Physical Security**: Complement electric strikes with additional physical security measures like reinforced doors and frames to resist forced entry. 10. **Cybersecurity**: If the electric strike is part of a networked system, ensure cybersecurity measures are in place to protect against hacking and unauthorized remote access. Addressing these considerations helps maintain the security and effectiveness of electric strikes in access control systems.